disable failing media unit tests
disable failing media unit tests

these don't work on my machine either

TBR=cpu

Review URL: http://codereview.chromium.org/18039

git-svn-id: http://src.chromium.org/svn/trunk/src@8000 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 51bd2067f30c14be3b78cc3fbb418f1ef0b37b19
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser